Improvement in steam-governor



iTo all whom it ma/y concern:

nnri'riALE'r H. PARKER,

or BUcKsPo-RT, MAINE.

IMPRowan/Inni' 1N STEAM-GOVERNOR Beit known that lI, ELIPH'ALET H. PARKER, of Bucksport, in the'county of Hancock, and State of Maine, have invented a new and useful Steam-Gov-- einer; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being'had to the accompanying drawings, making a part of this specification, in-which- Figure 1 is a perspective view of my invention, and Figure 2 is a detached perspectiveview of the ineline.

Similar letters indicate corresponding parts in theseveral figures.

The nature of my invention consists in a steam-govy ernor, driven by a belt, in the usual manner, theretardation being obtained by a fanthus driven, this fan being automatically raisedror lowered, according to the speed at which it is driven, by means of a small truck attached to it, which travels up and down a spiral incline, the rising and falling of the fan serving, through proper mechanism, to open and close the throttle-valve. To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

In the drawings- A is a bed-plate; B B are uprights; l O, a cross-bar;

D, a pulley; E, a crank; and F', a band. I G -is a fan, which revolves freely upon tbie vertical spindle a, which passes through the hub b of the fan.

Y on the main shaft, it revolves the spindle a with a rapidity proportioned to the relative size of the pulleys, and in the same direction as the formation of screw c may be.

In the drawings, the screw c being what is termed,

a left-hand screw, the motion of the spindle ,is given Vin the same direction.

As the spindle a revolves, it carries the fan G with.

it, at a certain velocity; but when the speed of the spindle is greater than the friction between it and hub b canA maintain upon thejan, then, the resistance .of the air upon the fan retarding it, the action of truck e upon the screw c carries the fan upward upon the spindle, thereby raising the end of horizontal rod g, which is pivoted in the bracket h, and which, being forked at fi, and placed astride spindle a, bears upon the hub b.

As the forked end of rod g is raised, the other end is, of course, lowered; and, by connecting this outer end, by any suitable means, with the throttle-valve, the increase of speed in spindle 'a serves to close the, valve; and, by the employment of weights either upon the fan, the lever Vg, or the lever attached to the throttlevalve, the required velocity of the engine may be readily adjusted and obtained.

rIhe spiral ilange c may be carried around the spindle a any desired number of times, according as it may be necessary to raise the fan; but if it be more than one circuit, then the stud d must pass down outside the ilange, the lower extremity being curved inward, to bring the track inthe proper position.

Having thus described my lnvention,

What I claim as new, and desire to secure by Letters Patent, is-' A steam-governor, constructed with fan G, spindle a, spiral flange c, truck e, or other suitable bearing for the fau upon the 'i'lange, pulley j, or its equivalent device, for imparting motion, and the rod g, or its equivalent, for connecting the governor with the valve, all arranged substantially as described and shown.

, ELIPHALE'I H. PARKER.

Witnesses:

DANIEL Remon, JOHN BUCK. 

